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| <div class="section" id="pyspark-pandas-dataframe-iloc"> |
| <h1>pyspark.pandas.DataFrame.iloc<a class="headerlink" href="#pyspark-pandas-dataframe-iloc" title="Permalink to this headline">¶</a></h1> |
| <dl class="py method"> |
| <dt id="pyspark.pandas.DataFrame.iloc"> |
| <em class="property">property </em><code class="sig-prename descclassname">DataFrame.</code><code class="sig-name descname">iloc</code><a class="headerlink" href="#pyspark.pandas.DataFrame.iloc" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Purely integer-location based indexing for selection by position.</p> |
| <p><code class="docutils literal notranslate"><span class="pre">.iloc[]</span></code> is primarily integer position based (from <code class="docutils literal notranslate"><span class="pre">0</span></code> to |
| <code class="docutils literal notranslate"><span class="pre">length-1</span></code> of the axis), but may also be used with a conditional boolean Series.</p> |
| <p>Allowed inputs are:</p> |
| <ul class="simple"> |
| <li><p>An integer for column selection, e.g. <code class="docutils literal notranslate"><span class="pre">5</span></code>.</p></li> |
| <li><p>A list or array of integers for row selection with distinct index values, |
| e.g. <code class="docutils literal notranslate"><span class="pre">[3,</span> <span class="pre">4,</span> <span class="pre">0]</span></code></p></li> |
| <li><p>A list or array of integers for column selection, e.g. <code class="docutils literal notranslate"><span class="pre">[4,</span> <span class="pre">3,</span> <span class="pre">0]</span></code>.</p></li> |
| <li><p>A boolean array for column selection.</p></li> |
| <li><p>A slice object with ints for row and column selection, e.g. <code class="docutils literal notranslate"><span class="pre">1:7</span></code>.</p></li> |
| </ul> |
| <p>Not allowed inputs which pandas allows are:</p> |
| <ul class="simple"> |
| <li><p>A list or array of integers for row selection with duplicated indexes, |
| e.g. <code class="docutils literal notranslate"><span class="pre">[4,</span> <span class="pre">4,</span> <span class="pre">0]</span></code>.</p></li> |
| <li><p>A boolean array for row selection.</p></li> |
| <li><p>A <code class="docutils literal notranslate"><span class="pre">callable</span></code> function with one argument (the calling Series, DataFrame |
| or Panel) and that returns valid output for indexing (one of the above). |
| This is useful in method chains when you don’t have a reference to the |
| calling object but would like to base your selection on some value.</p></li> |
| </ul> |
| <p><code class="docutils literal notranslate"><span class="pre">.iloc</span></code> will raise <code class="docutils literal notranslate"><span class="pre">IndexError</span></code> if a requested indexer is |
| out-of-bounds, except <em>slice</em> indexers which allow out-of-bounds |
| indexing (this conforms with python/numpy <em>slice</em> semantics).</p> |
| <div class="admonition seealso"> |
| <p class="admonition-title">See also</p> |
| <dl class="simple"> |
| <dt><a class="reference internal" href="pyspark.pandas.DataFrame.loc.html#pyspark.pandas.DataFrame.loc" title="pyspark.pandas.DataFrame.loc"><code class="xref py py-obj docutils literal notranslate"><span class="pre">DataFrame.loc</span></code></a></dt><dd><p>Purely label-location based indexer for selection by label.</p> |
| </dd> |
| <dt><a class="reference internal" href="pyspark.pandas.Series.iloc.html#pyspark.pandas.Series.iloc" title="pyspark.pandas.Series.iloc"><code class="xref py py-obj docutils literal notranslate"><span class="pre">Series.iloc</span></code></a></dt><dd><p>Purely integer-location based indexing for selection by position.</p> |
| </dd> |
| </dl> |
| </div> |
| <p class="rubric">Examples</p> |
| <div class="doctest highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="n">mydict</span> <span class="o">=</span> <span class="p">[{</span><span class="s1">'a'</span><span class="p">:</span> <span class="mi">1</span><span class="p">,</span> <span class="s1">'b'</span><span class="p">:</span> <span class="mi">2</span><span class="p">,</span> <span class="s1">'c'</span><span class="p">:</span> <span class="mi">3</span><span class="p">,</span> <span class="s1">'d'</span><span class="p">:</span> <span class="mi">4</span><span class="p">},</span> |
| <span class="gp">... </span> <span class="p">{</span><span class="s1">'a'</span><span class="p">:</span> <span class="mi">100</span><span class="p">,</span> <span class="s1">'b'</span><span class="p">:</span> <span class="mi">200</span><span class="p">,</span> <span class="s1">'c'</span><span class="p">:</span> <span class="mi">300</span><span class="p">,</span> <span class="s1">'d'</span><span class="p">:</span> <span class="mi">400</span><span class="p">},</span> |
| <span class="gp">... </span> <span class="p">{</span><span class="s1">'a'</span><span class="p">:</span> <span class="mi">1000</span><span class="p">,</span> <span class="s1">'b'</span><span class="p">:</span> <span class="mi">2000</span><span class="p">,</span> <span class="s1">'c'</span><span class="p">:</span> <span class="mi">3000</span><span class="p">,</span> <span class="s1">'d'</span><span class="p">:</span> <span class="mi">4000</span> <span class="p">}]</span> |
| <span class="gp">>>> </span><span class="n">df</span> <span class="o">=</span> <span class="n">ps</span><span class="o">.</span><span class="n">DataFrame</span><span class="p">(</span><span class="n">mydict</span><span class="p">,</span> <span class="n">columns</span><span class="o">=</span><span class="p">[</span><span class="s1">'a'</span><span class="p">,</span> <span class="s1">'b'</span><span class="p">,</span> <span class="s1">'c'</span><span class="p">,</span> <span class="s1">'d'</span><span class="p">])</span> |
| <span class="gp">>>> </span><span class="n">df</span> |
| <span class="go"> a b c d</span> |
| <span class="go">0 1 2 3 4</span> |
| <span class="go">1 100 200 300 400</span> |
| <span class="go">2 1000 2000 3000 4000</span> |
| </pre></div> |
| </div> |
| <p><strong>Indexing just the rows</strong></p> |
| <p>A scalar integer for row selection.</p> |
| <div class="doctest highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="n">df</span><span class="o">.</span><span class="n">iloc</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span> |
| <span class="go">a 100</span> |
| <span class="go">b 200</span> |
| <span class="go">c 300</span> |
| <span class="go">d 400</span> |
| <span class="go">Name: 1, dtype: int64</span> |
| </pre></div> |
| </div> |
| <div class="doctest highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="n">df</span><span class="o">.</span><span class="n">iloc</span><span class="p">[[</span><span class="mi">0</span><span class="p">]]</span> |
| <span class="go"> a b c d</span> |
| <span class="go">0 1 2 3 4</span> |
| </pre></div> |
| </div> |
| <p>With a <cite>slice</cite> object.</p> |
| <div class="doctest highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="n">df</span><span class="o">.</span><span class="n">iloc</span><span class="p">[:</span><span class="mi">3</span><span class="p">]</span> |
| <span class="go"> a b c d</span> |
| <span class="go">0 1 2 3 4</span> |
| <span class="go">1 100 200 300 400</span> |
| <span class="go">2 1000 2000 3000 4000</span> |
| </pre></div> |
| </div> |
| <p><strong>Indexing both axes</strong></p> |
| <p>You can mix the indexer types for the index and columns. Use <code class="docutils literal notranslate"><span class="pre">:</span></code> to |
| select the entire axis.</p> |
| <p>With scalar integers.</p> |
| <div class="doctest highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="n">df</span><span class="o">.</span><span class="n">iloc</span><span class="p">[:</span><span class="mi">1</span><span class="p">,</span> <span class="mi">1</span><span class="p">]</span> |
| <span class="go">0 2</span> |
| <span class="go">Name: b, dtype: int64</span> |
| </pre></div> |
| </div> |
| <p>With lists of integers.</p> |
| <div class="doctest highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="n">df</span><span class="o">.</span><span class="n">iloc</span><span class="p">[:</span><span class="mi">2</span><span class="p">,</span> <span class="p">[</span><span class="mi">1</span><span class="p">,</span> <span class="mi">3</span><span class="p">]]</span> |
| <span class="go"> b d</span> |
| <span class="go">0 2 4</span> |
| <span class="go">1 200 400</span> |
| </pre></div> |
| </div> |
| <p>With <cite>slice</cite> objects.</p> |
| <div class="doctest highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="n">df</span><span class="o">.</span><span class="n">iloc</span><span class="p">[:</span><span class="mi">2</span><span class="p">,</span> <span class="mi">0</span><span class="p">:</span><span class="mi">3</span><span class="p">]</span> |
| <span class="go"> a b c</span> |
| <span class="go">0 1 2 3</span> |
| <span class="go">1 100 200 300</span> |
| </pre></div> |
| </div> |
| <p>With a boolean array whose length matches the columns.</p> |
| <div class="doctest highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="n">df</span><span class="o">.</span><span class="n">iloc</span><span class="p">[:,</span> <span class="p">[</span><span class="kc">True</span><span class="p">,</span> <span class="kc">False</span><span class="p">,</span> <span class="kc">True</span><span class="p">,</span> <span class="kc">False</span><span class="p">]]</span> |
| <span class="go"> a c</span> |
| <span class="go">0 1 3</span> |
| <span class="go">1 100 300</span> |
| <span class="go">2 1000 3000</span> |
| </pre></div> |
| </div> |
| <p><strong>Setting values</strong></p> |
| <p>Setting value for all items matching the list of labels.</p> |
| <div class="doctest highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="n">df</span><span class="o">.</span><span class="n">iloc</span><span class="p">[[</span><span class="mi">1</span><span class="p">,</span> <span class="mi">2</span><span class="p">],</span> <span class="p">[</span><span class="mi">1</span><span class="p">]]</span> <span class="o">=</span> <span class="mi">50</span> |
| <span class="gp">>>> </span><span class="n">df</span> |
| <span class="go"> a b c d</span> |
| <span class="go">0 1 2 3 4</span> |
| <span class="go">1 100 50 300 400</span> |
| <span class="go">2 1000 50 3000 4000</span> |
| </pre></div> |
| </div> |
| <p>Setting value for an entire row</p> |
| <div class="doctest highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="n">df</span><span class="o">.</span><span class="n">iloc</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">=</span> <span class="mi">10</span> |
| <span class="gp">>>> </span><span class="n">df</span> |
| <span class="go"> a b c d</span> |
| <span class="go">0 10 10 10 10</span> |
| <span class="go">1 100 50 300 400</span> |
| <span class="go">2 1000 50 3000 4000</span> |
| </pre></div> |
| </div> |
| <p>Set value for an entire column</p> |
| <div class="doctest highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="n">df</span><span class="o">.</span><span class="n">iloc</span><span class="p">[:,</span> <span class="mi">2</span><span class="p">]</span> <span class="o">=</span> <span class="mi">30</span> |
| <span class="gp">>>> </span><span class="n">df</span> |
| <span class="go"> a b c d</span> |
| <span class="go">0 10 10 30 10</span> |
| <span class="go">1 100 50 30 400</span> |
| <span class="go">2 1000 50 30 4000</span> |
| </pre></div> |
| </div> |
| <p>Set value for an entire list of columns</p> |
| <div class="doctest highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="n">df</span><span class="o">.</span><span class="n">iloc</span><span class="p">[:,</span> <span class="p">[</span><span class="mi">2</span><span class="p">,</span> <span class="mi">3</span><span class="p">]]</span> <span class="o">=</span> <span class="mi">100</span> |
| <span class="gp">>>> </span><span class="n">df</span> |
| <span class="go"> a b c d</span> |
| <span class="go">0 10 10 100 100</span> |
| <span class="go">1 100 50 100 100</span> |
| <span class="go">2 1000 50 100 100</span> |
| </pre></div> |
| </div> |
| <p>Set value with Series</p> |
| <div class="doctest highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="n">df</span><span class="o">.</span><span class="n">iloc</span><span class="p">[:,</span> <span class="mi">3</span><span class="p">]</span> <span class="o">=</span> <span class="n">df</span><span class="o">.</span><span class="n">iloc</span><span class="p">[:,</span> <span class="mi">3</span><span class="p">]</span> <span class="o">*</span> <span class="mi">2</span> |
| <span class="gp">>>> </span><span class="n">df</span> |
| <span class="go"> a b c d</span> |
| <span class="go">0 10 10 100 200</span> |
| <span class="go">1 100 50 100 200</span> |
| <span class="go">2 1000 50 100 200</span> |
| </pre></div> |
| </div> |
| </dd></dl> |
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